Color-coded and sized loadable polymeric particles for therapeutic and/or diagnostic applications and methods of preparing and using the same
First Claim
1. Polymeric particles each comprising an acrylate polymer hydrogel core, a coating, and at least two water soluble organic dyes, wherein:
- the coating comprises poly[bis(trifluoroethoxy)]phosphazene or a derivative thereof;
the polymeric particles are prepared to a known size; and
the at least two dyes impart a distinctive color to the polymeric particles based upon their known size;
wherein, based upon ionic interactions, one of the at least two water soluble dyes has an affinity for the core and another of the at least two water soluble dyes has an affinity for the coating.
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Accused Products
Abstract
Polymeric particles are provided for use in therapeutic and/or diagnostic procedures. The particles include poly[bis(trifluoroethoxy)phosphazene] and/or a derivatives thereof which may be present throughout the particles or within an outer coating of the particles. The particles may also include a core having a hydrogel formed from an acrylic-based polymer. Such particles may be provided to a user in specific selected sizes to allow for selective embolization of certain sized blood vessels or localized treatment with an active component agent in specific clinical uses. Particles of the present invention may further be provided as color-coded microspheres or nanospheres to allow ready identification of the sized particles in use. Such color-coded microspheres or nanospheres may further be provided in like color-coded delivery or containment devices to enhance user identification and provide visual confirmation of the use of a specifically desired size of microspheres or nanospheres.
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Citations
11 Claims
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1. Polymeric particles each comprising an acrylate polymer hydrogel core, a coating, and at least two water soluble organic dyes, wherein:
- the coating comprises poly[bis(trifluoroethoxy)]phosphazene or a derivative thereof;
the polymeric particles are prepared to a known size; and the at least two dyes impart a distinctive color to the polymeric particles based upon their known size; wherein, based upon ionic interactions, one of the at least two water soluble dyes has an affinity for the core and another of the at least two water soluble dyes has an affinity for the coating. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- the coating comprises poly[bis(trifluoroethoxy)]phosphazene or a derivative thereof;
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11. Polymeric particles each comprising a core, a coating, and at least two water soluble organic dyes, wherein:
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a. the coating comprises poly[bis(trifluoroethoxy)phosphazene] and/or a derivative thereof and substantially encloses the core; b. the core comprises an acrylate polymer hydrogel; and c. the polymeric particles are prepared to a known size; wherein the at least two dyes impart a distinctive color to each polymeric particle according to its known size; wherein, based upon ionic interactions, one of the at least two water soluble dyes has an affinity for the core and another of the at least two water soluble dyes has an affinity for the coating.
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Specification